fipuser_ecos.c

这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,CD MP3...有很好的参考价值.

/*
 * Here are all PRIVATE definitios and functions definied, which are the same for all players.
 * To simplify it, we also declare common functions here!!!
 *
 * Copyright(c) 2002 Sigma Designs, Inc.
 * Author: Markus Brenner
 * September 2002
 */

// #include "fipuser.h"
#include "fip_private.h"
#include "fip.h"
#include "irstate.h"

#include <cyg/hal/hal_io.h>
#include <cyg/kernel/kapi.h>

cyg_flag_t fip_flag;
static cyg_handle_t fip_timer_interrupt, fip_pio_interrupt;
static cyg_interrupt fip_timer_interrupt_struct, fip_pio_interrupt_struct;

static cyg_uint32 fip_timer_ISR(cyg_vector_t vector, cyg_addrword_t data)
{
	cyg_interrupt_acknowledge(vector);
	
	/* clear the timer1 interrupt */
	*CYG_DEVICE_TIMER_STATUS = 2;
	if(vector == CYGNUM_HAL_INTERRUPT_WDTIMER) {
			if(fip_timer())
					return CYG_ISR_HANDLED | CYG_ISR_CALL_DSR;
			return CYG_ISR_HANDLED;
	}
	
	diag_printf("wrong fip timer interrupt vector: %d\n", vector);
	
	return CYG_ISR_HANDLED;
}

static void fip_timer_DSR(cyg_vector_t vector, cyg_uint32 count, cyg_addrword_t data)
{	
	if(count>1) {
		diag_printf("missed %d fip timer interrupt(s)\n", count-1);
	}

	cyg_flag_setbits(&fip_flag, 0x1);
	
	return;
}

static cyg_uint32 fip_pio_ISR(cyg_vector_t vector, cyg_addrword_t data)
{
	cyg_interrupt_acknowledge(vector);

	/* clear the pio interrupt */
	HAL_WRITE_UINT32(JASPER_PIO0_BASE + PIO_INT, 0x00010001<<IR_PIO );

	if(vector != CYGNUM_HAL_INTERRUPT_PIO0) {
			diag_printf("wrong fip pio interrupt vector: %d\n", vector);
			return CYG_ISR_HANDLED;
	}
	
	if(ir_pio())
			return CYG_ISR_HANDLED | CYG_ISR_CALL_DSR;
	else
			return CYG_ISR_HANDLED;
}

static void fip_pio_DSR(cyg_vector_t vector, cyg_uint32 count, cyg_addrword_t data)
{	
	if(count>1) {
		diag_printf("missed %d fip pio interrupt(s)\n", count-1);
	}
	
	cyg_flag_setbits(&fip_flag, 0x1);
	return;
}

int fip_loadmodule(void)
{	
	cyg_flag_init(&fip_flag);

	cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_WDTIMER, 0, 0, &fip_timer_ISR, &fip_timer_DSR,
					&fip_timer_interrupt, &fip_timer_interrupt_struct);
	cyg_interrupt_attach(fip_timer_interrupt);

	cyg_interrupt_create(CYGNUM_HAL_INTERRUPT_PIO0, 0, 0, &fip_pio_ISR, &fip_pio_DSR,
					&fip_pio_interrupt, &fip_pio_interrupt_struct);
	cyg_interrupt_attach(fip_pio_interrupt);

	ir_init();
	fip_init();

	cyg_interrupt_unmask(CYGNUM_HAL_INTERRUPT_WDTIMER);
	cyg_interrupt_unmask(CYGNUM_HAL_INTERRUPT_PIO0);
		
	return 0;
}

int fip_open(void)
{
    return 0;
}
	
void fip_close(void)
{
    return;
}